TestHook

Ethereum

Runs code on every swap. Can take tokens from swaps. Runs at pool creation.

0x1b56d0a5cb03c560f44b1ca9f1592043745f20cc First pool 21 Oct 2026View on explorer

CBe carefulNot in Uniswap’s hook registry · Can take tokens out of swaps

Pools

Dynamic-fee pools

Last new pool

15d

Code size

8,053 B

What it can do

Runs code on every swap

Its code executes inside each trade in pools that use it.

Can take tokens from swaps

It can take or add tokens during a swap. Fees, burns and custom curves work this way, and so do scams.

Runs at pool creation

It runs when a pool is created, often to lock in that pool’s settings.

Automated checks, not an audit

✓Not upgradeableNo proxy pattern found: the code is fixed.

!Has an adminowner() is 0x4dbf…ff1c. That account can usually change fees, limits or allowlists after you trade.

!Not in Uniswap’s hook registryUnregistered hooks get less scrutiny. Most scam hooks are unregistered.

✓Source code publishedThe code on the block explorer matches what's deployed (contract: TestHook).

iCan change swap amountsIt has a ReturnDelta permission. Normal for fees and burns, but also how fake-quote hooks steal.

?No audit linkedAutomated checks only.

1 total

PairCreatedFeePool ID

ETH / TEST 15d 0.30% 0x138e…52c9 Tx ↗